Window frame and sash construction



May 2, 1933. i 'MADSEN 1,906,475

WINDOW FRAME AND SASH CONSTRUCTION Filed March 24, 1930 3 Sheets-Sheet 1 y 2, 1933- s. MADSEN 1,906,475

I WINDOW FRAME AND SASH CONSTRUCTION Filed March 24, 1930 s Sheets-Sheet s 5 50 I 6 b L 2 x A Patented May -2, 1933 I UNITED STATES PATENT OFFICE SEBN HADSEN, OI CLINTON, IOWA, ASSIGNOR TO CURTIS COMPANIES, INCORPORATED,

' F CLINTON, IOWA WINDOW'FRAME AND SASH CONSTRUCTION I Application filed March 24, 1930. Serial No. 438,451.

The object of my invention is to provide a window frame and sash construction involving novel features without sacrificing any of the advantages of constructions now in use, the construction of the improvedframe and sash being simple, durable and comparatively inexpensive to manufacture.

- A further object is to construct a window frame and sashes therefor with various feaproof than the ordinary type of double hung sash windows now in use.

A further object is to provide an improved method of balancing the sash and means to prevent window rattle and noises as well as sticking of the sashes relative to the frame. A further object is to make the window easyto' repair by removal of the sash.

Another object is the elimination of window weights and the necessary boxes therefor whereby a narrower window trim can be used which lends to the architectural beauty of the construction. More particularly, it is my object to provide straight line extension springs for suspending the sashes of the window, the side yambs, stops and side rails of the window sashes each having channels formed therein to provide, when assembled relative to each' other, grooves to house .the sprin Stilla further object is to rovi ea arting stop between the sashes of the win ow of such construction that it will reventsticking of the sash prevent the in tration of air thus making'the window construction more weather proof and provide a frictional means to retain the window sashes in any vertically adjusted position against the action of the springs thereon.

With these and other 'objectsin view my invention consists in the construction, arrangement and combination of the various parts of my device, whereby the objects contemlated are attained, as hereinafter more ully set forth, plointed out in-my claims, and illustrated in -t e accompanying drawings, in which:

Figure 1 is an outside view of a window frame showing the left hand side thereof with parts broken away and other parts shown in tures to make the construction more weather stops 18 and section to more fully illustrate the invention.

Figure 2 is a similar view of the ri ht hand side of a window frame as viewed rom the inside of a building.

v Figure 3 is a perspective view of a arting -stop used between the sashes 0 the window.

Figure 4 is a vertical sectional view on the line 3-3 of Figure 1 illustrating the window frameand sashes in crosssection.

Figure 5 is an enlarged sectional view on the line 4- 4: of Figure 1 illustrating the connection of the springs to the sashes and the parting stop between the sashes.

Figure 6 is an enlarged sectional view on the line 5-5 of Figure 1 illustrating the parting stop and its coaction with the window sashes.

Figure 7 is a similar sectional view showing the normal position'ofthe parting stop when the window sashes are not in position and Figure 8 is an enlarged sectional view through a window frame above the sashes therein illustrating a slightly modified form of spring suspension for the window sashes.

On the accompanying drawings I have used the reference numeral 10 to indicate a side jamb of a window frame A. llhe head j amb of the window frame A is indicated by the reference numeral 12 and the sill thereof by the numeral 14. The window frame A, of course includes the ordinary side and head casings for the inside and outside of the frame etc. but which are not numbered on the drawings.

An upper sash B and a lower sash C are slidably mounted relative to the window frame A between blind stops 16, parting inner stops 20 in the ordinary manner. The head jamb 12 is preferably provided with avmetal weather strip 22 to fit in'a groove 24 of the upper rail of the upper sash B and the sill 14 is likewise pro- 1 vided with. a metal weather strip 26 to coact with a oove 28 in the lower rail of the inner sash Instead of providing the usual ropes, weight pulleys, weights and weight boxes for the window frame and sash construction, I

eliminate all of these elements and provide a pair of straight line extension springs 30 for the upper sash B and a similar pair of springs 32 for the lower sash C. The side jambs 10 are provided with channels 34 and 36 to partially receive the springs 30 and 32 respectively. The window sashes B and C are provided with channels 38 and 40 respectively while the blind stop 18 is provided with a channel 42 and the inner stop with a channel 44 as best shown in hi re 4 of the drawings. lhe channels 34, 38 and i2 conjointly house the spring 30 while the channels 36, i and 44 conjcintly house the spring 32. w

The upper ends of the springs 30 and 32 are secured to the side jambs 10 b means of screws 46 and 4:8. The lower en s or the springs 30 and 32 are secured to the window sashes B and C respectively by screws 50 and 52 or other suitable means. The tension of the springs 30 and 32 is preferably designed to balance the weight of the sashes B and C vertically midway of the window frame A. Accordingly, the lower ends of the springs may be secured to the window sashes as shown or at any point on the sides of the sashes to suit the spring tension required to best balance the sashes. Thus when the sashes are moved above such midway position they will be moved against their weight which tends to lower them while when moved below such midway position they will he moved against the tension of the springs which tends to raise them. Thus a difierential in the action of the springs is encountered which must be overcome to prevent the sashes from moving freely to their central position and to retain the sashes in any position to which they maybe adjusted without manipulating a manual locking device. To retain the sashes B and C in any adjusted position I have devised a parting stop 18 of novel construction. The arting stop 18has an attaching central portion 18a, porgions 18b extending at right angles-thererom, engaging portions 1807. In forming the parting stop 18, the portions 186, c and d are all formed parallel with each other and at right angles to the portion-18a, as shown in Figures 3 and 6. The portions 186 and part of the portions 180 are adapted to fit 1n grooves 54 formed in the side jamhs 10. The distance from, surface to surface of the portions 18d is designed greater than the normal distance between the sashes B and G as clearly illustrated in Figure so that when the sashes are in position, the portions 180 inwardly (the parting sto $18K being pre erably made of resilient s set will sprin metal) and assume an angular position but the portions 18d will lie fiat against the sashes B and .0 to provide an area contact rather than a line contact.

.window sashes B and rebcnt portions 180 and rebent sash neoaeve This provides greater friction hetween the parting stop and the window sashes and more efiectively guards a ainst the infiltration of air with the resufi that an eficient weather seal is provided by the peculiar formation of the parting stop.

- An opening 43 is provided .adjacentthc foot of each blind stop 16 through which water may drain from the inner side of the stop over the sill tothe outer side of the stop. This prevents any water accumulating behind the stop in the channel 42.

In Figure 8 .I have illustrated. a slightly modified tor-moi spring suspension for the C in which the channels 38 and ,42 are substantially the same except a little deeper while the channels 34 and 38 in the side jamhs are somewhat' wider. The springs 30 and 32, have more room in which to operate and extend at a slight angle as illustrated.

The blind stops in and the inner'stops instead of being provided with grooves 42 and as as previously described are merely cut at a slight angle as illustrated at 42c and 44a respectively. Thus the springs are housed by the grooves in the jamhs and sashes and by one surface of each stop. This construction does not interfere with the advantages oi the general construction described in the first seven figures oi? the drawlugs.

Certain advantages arise from forming the grooves for housing the sprin s and ing the stops, with or without grooves, as part of the housing for the spring. When it is desired to remove a stop which may be screwed or otherwise secured to the side jambs 10, unhook the v and hook another spring in position.

This construction also provides an easy way of removing the sashes for any purpose. After the sprin s are removed the sashes can be merely pufied out of the frame." Thus the springs do not form a key between side jamb and window sash as when full half 32 conjointly. in the jambs andsil s and 115;

ends of the springs" circle channels are formed in the side jambs 1 and sashes for the springs.

Utilizing the stop housing for the spring also provides the most com lete hOIISIII arrangement for the springs w on exposed above the upper rails of the window sashes as is evident from an inspection of Figure 3 and reduces the exposure of the spring to a minimum consistout with the advantages above pointed out for replacing springs and removing sashes from the window frames.

Due to the inside of the parting stops 18 hein hollow, it is desirable to place a filler 56 o felt or the like between the sides of the parting stop to prevent the passage of air upwardly through the partin stop at the check rails of the window sashes-B and Q'- -to form part of the,

10 grooves 54 rather than the portions 18a contacting with the surfaces of the side jambs 10.

It will be obvious that in a window frame and sashes constructed in accordance with my disclosure the sashes will slide freely at all times where a construction having a wood parting stop will bind when the parts swell. Any swelling or contracting of the parts relative to each other will be compensated for by the springy characteristic of the parting stop 18 and thus prevent all binding and sticking of the window sashes relative to the window frame. The expanding feature of the parting stop positively prevents all window rattle and the window is furthermore quieter in operation because of the elimination of sash cords, pulleys and weights. Painting and varnishing the window may temporarily stick the sashes and stops together but the spring parting stops 18 permit paint or varnish joints to be easily broken after which the parting stops adapt themselves to permitthe sash to ride over any accumulations. After a few movements of the sashes such accumulations will be worn ofi.

The springs are much more easily replaced than the sash weights of old constructions. It is believed, however, that the spring will last indefinitely and not need replacement.

Some change may be made in the construction and arrangementof the parts of my device without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims, any modified forms of structure or use of mechanical equivalents, which may be reasonably included within their scope.

I claim as my invention.

1. In a window, a jamb, grooves therein, sash slidable relative to the jamb, a parting stop of H section having flanges fitted into said grooves and having flanges or leaves arranged to bear yieldingly against said sash.

' 2. A parting stop, substantially H-shaped in cros section, two legs thereof being adapted to engage a jamb and seat in ooves therein and be supported thereby an the other two legs having out-turnedreflex leaves adapted to resiliently engage window sash.

3. In a window frame, a. parting stop formed of one piece of metal and shaped substantially like an H in cross section, two of the legs thereof being-adapted for attachment to said window frame and insertion into 55 grooves therein, and the othertwo being adapted to bear resiliently against window sashes.

4. In a window frame, a jamb and a formed stop,'said stop having a. central rib in a plane substantially parallel with and spaced from v the face of the jamb, extensions at each side of the rib at a spaced distance apart being inwardly to engage the jamb, said extensions again reversely bent and extending to a plane outwardly from the rib and again reversely bent and extending inwardly a spaced distance toward the plane of the rib, the inwardly and outwardly bent extensions lying in planes substantially perpendicular to the plane of the rib and the extensions on each side of the rib being designed to flexibly yield in a direction parallel with the plane of the rib.

5. In a window frame, a j amb and a formed stop, said stop having a central rib in a plane substantially parallel with and spaced from the face of the j amb, spaced apart extensions at each side of the rib and bent inwardly to engage the j amb, said extensions again bent outwardly to provide leaves substantially in planes perpendicular to the rib and said leaves designed to be resilient in a direction parallel with the plane of the rib.

6..In a window frame, a jamb, stops applied to the jamb, a sash to slide adjacent the amb and between the stops, one of the stops having a flat faced leaf lying at all times in a plane parallel with a face of the sash and bearing with area contact and a resilient pressure against said face of said sash whereby the sash is held by frictional contact with the stops and thus gently restrained in its sliding motion.

7 A parting stop for attachment to a window jamb having portions projecting therefrom by accordionpleats and terminating in faces of substantialarea for resilientlyfengagmg the side faces of window sash, where by flat faces of considerable area may be held against the sash throughout considerable movement of the sash.

8. In a window construction, a jamb and a sliding sash, and a resilient metal parting stop having'one part attached to the jamb, and a member reversely folded, like an accordion pleat and projecting outwardly to bear resiliently with a flat face of substantial area against one face ofthe sash throughout the length of the sash.

9. In a, window construction, a frame, a sash slidable therein and a resilient metal parting stop having one part attached to the jamb and having a member reversely folded like an accordion pleat and extending outwardly to bear resiliently against one face of the sash.

. 10. In a window having jambs and sliding strip 6n the safi 351mb on the other 'sie (if to the jamb Eyfld having such sash attache & r fiex-folded leaf extending oufiwmdly to bear agaiim a. fexse of the sash'haxing resil- 5' iency'to permit the leaf to bear a ainst the sash with a fiat area threughout Its length.

SEEN 11..

SEN; 

